Answers

Subtract 21/81 from 42/6

1^st number: 7 0/6, 2^nd number: 21/81

42/6 - 21/81 is 182/27.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 6 and 81 is 162
   
   Next, find the equivalent fraction of both fractional numbers with denominator 162
2. For the 1st fraction, since 6 × 27 = 162,
   42/6 = 42 × 27/6 × 27 = 1134/162
3. Likewise, for the 2nd fraction, since 81 × 2 = 162,
   21/81 = 21 × 2/81 × 2 = 42/162
4. Subtract the two like fractions:
   1134/162 - 42/162 = 1134 - 42/162 = 1092/162
5. After reducing the fraction, the answer is 182/27
6. In mixed form: 620/27

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